Apparatus and process for shaping and covering cushion foam
CA 1264649 C · Owner: Astechnologies, Inc. · Inventors: Elliott, George M.; Avery, Michael L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and Process for Shaping and, Covering Cushion Foam Abstract, A machine for laminating fabric (123) to open cell cushion foam (124) while forming design lines in the foam is disclosed. The machine comprises a top hollow die (21) having a land area (37) and protruding ridge sections (39). The land area is perforated with holes (38) and the ridge sections are perforated with holes (41). Also provided is a complementary, hollow lower die (54) which also has perforations (130). Hot melt adhesive is interleaved between fabric (123) and foam (124). Land area (37) of top die (21) is preheated to just below the melt point of the adhesive e.g. about 240° F; ridge sections (39) are heated by …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 23, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 2007.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.